Related by context. Frequent words. (Click for all words.) 57 muscles 56 metabolism slows 56 Lifting weights 55 muscle atrophy 54 skeletal muscles 52 muscles tendons 52 atrophy 51 pelvic muscles 51 muscle tissue 50 calf muscles 50 muscle fibers 50 Aerobic exercise 49 arthritic joints 49 absorb nutrients 49 muscular endurance 49 facial muscles 49 atrophied 49 metabolisms 49 metabolically active 49 resting metabolic 48 muscle 48 treadmill 47 proprioception 47 skeletal muscle 47 overtrained 47 relieves stress 47 pectoral muscles 47 aerobic exercises 47 hips knees 47 jaw muscles 47 knees ankles 46 hip flexors 46 metabolism 46 neural connections 46 abdominal muscles 46 muscular skeletal 46 arthritic knees 46 repetitive motions 46 dehydrate 46 spinal discs 46 insulin hormone 46 lymph glands 46 lift weights 45 limbs 45 mentally fatigued 45 musculature 45 stamina 45 dehydrates 45 perspire 45 knees hips 45 achiness 45 cardio exercises 45 dull ache 45 aerobic exercise 45 tendons 44 aching bones 44 regrow 44 abdominal exercises 44 aerobic 44 aerobically 44 aching joints 44 jerky movements 44 Sedentary 44 hind limbs 44 bladder 44 atrophying 44 ankles knees 44 metabolic 44 immobility 44 legs 44 Varicose veins 44 joints 44 brain 44 metabolise 43 regenerates 43 oxygen uptake 43 gait 43 cardio 43 limber 43 nerve endings 43 brain shrinkage 43 pelvic bones 43 Staying powerSimple steps 43 hypertrophic 43 hormone insulin 43 ride stationary bike 43 Parkinson sufferers 43 aerobic fitness 43 exercising 43 ache 43 fatigued 43 upright posture 43 bone density 43 strenuous exercise 43 physiologically 43 aerobic capacity 43 regrown 43 releases endorphins 43 menstruate 43 bones 43 locomotor